Improvement in the methods of securing joints of frames



"PATENTED JAN. 24, 1871 C. F. LINSGOTT.

METHOD OF SECURING JOINTS OF FRAMES, 6w.

flinited time igitillii Gtiijline.

(ll-[All LES 1 LINSGOTT, OF NEW YORK, Y., ASSIGNOR T0 EDWARD S. TORREYAND JOSEPH TORREY, OF SAME PLACE.

To all Ito-2n it may concern Be it known that I, Cit-nines l5.Ilnxsco'rir, of the city, ct nty, and State of New York, have invented anew nd improved Method of Securing Joints for Frame 60.; and .l. dohereby declare that thei'ollow' ing is full and exact descriptionthereof, reference being ad to the accompanying drawing and to theletters A? reference marked thereon making a part of this sp *iiication.

ihis nvention relates to a new and useful improvesecuring miter andother joints for frames, windm screens, See, and. consists in joiningthe angles of "aid frames, &c., with a key of peculiar constructi i,hereinafter fully described, in such manner as will hold the joints andangles of the frame in a and more rigid manner than the ordinary int,and at the same time the joint can be peditionsly made and at much lesscost. In t e accompanying sheet of drawing- Big E: 1 representsa sideView of my key;

l ig e 2, a plan view of same,

l i 'e 3, a ViOW of the key, as applied to straightjoint; nd

Fig es 4 and 5 show the applications of the key to the noldings whenmitered.

Sim or letters of reference indicate corresponding part-s the drawing.

A rxn'escnts a key, which may be made of malleable in n or any othersuitable material, whether east, rolled, n forged.

Thi key is made with two cylindrical edges, (i a, and an intermediateweb, I), and ismade slightly tapering as shown in iig. 1, and may be ofany size desired.

In rder to make a joint with my key, it is necessl only ry to dress offthe two faces ofthe molding, the,

Letters Patent No. 111,128, dated J anuary24, 1871.

IMPROVEMENT IN THE METHODS OF SECURING JOINTS OF FRAMES, &c.

The Schedule referred to in these Letters Patent and making part of thesame.

it is desired to join. Then, by means of some suitable instrument, suchas a drill, to form two holes, one on either side of the joint,corresponding in size to the cylindrical edges a (L' of the key, andwith a saw or otherwise make atrack for the web 1.

The key is then inserted so as to straddle the joint, and driven home,when the. slight taper given to its sides will draw the faces of thejoint tightly together, and the key once in place, its peculiarconstruction, as shown in fi 1, prevents the possibility of the jointsspringing apart, but confines it rigidly in position; or, instead ofapplying the key as above stated, the key may be made in the shape of aright angle, and then applied on the side of the melding, as shown infig. 5.

It will be desirable, in practice, to punch the key a little below thesurface of the molding, so that it the frame, after being put together,requires dressing, it can be done without injury to the plane.

I donot wish to coniinc myself to making framejoints merely with my key,nor to the use of but one key to each joint, biit it may be usedwherever a mortise or tenon-joint is now employed or found necessary,and one or more keys may be used to each joint if desired.

Having thus described my invention,

\Vhat 1 claim as new, and desire to secure by Len ters Patent, is-

A key, A, formed with the cylindrical sides a a and web I), when used oremployed for making or securing joints of frames, screens, 870., ashereinbefore described and set forth.

CHARLES F. LINSOOTL.

Witnesses:

11. L. WATTEXBERG, G. M. PLYMPTON.

